7. \( \begin{array}{r}748 \\ \times \quad 50 \\ \hline\end{array} \)

To solve \( 748 \times 50 \), you can simplify the multiplication by breaking it down. First, note that \( 50 \) is the same as \( 5 \times 10 \). So you can multiply \( 748 \times 5 \) first, which is \( 3740 \), and then add the zero from multiplying by \( 10 \) to get \( 37400 \). Alternatively, you can simply multiply directly: \( 748 \times 50 = 37400 \). So the final answer is \( 37400 \). Feel free to check the math with a calculator for a quick confirmation!